Scientists propose laser tail field accelerator improvement technology

The news helped scientists discover that the Higgs Boson's Large Hadron Collider (LHC) is a huge device buried beneath the Swiss-French border. It requires a 27-kilometer path for particle acceleration, which allows the latter to approach the speed of light before they collide with each other. However, there is another particle accelerator called a laser wake accelerator. It only requires a small fraction of the distance required by traditional accelerators like lhc.

Today, researchers from India and South Korea have proposed a new way to improve the beam quality of laser wake accelerators. Such accelerators are sometimes referred to as tabletop accelerators because they can be mounted on standard test benches. Because laser wake accelerators are only a fraction of the size and cost of traditional accelerators, they can bring high-energy physics experiments to more laboratories and universities, and produce charged particles for medical treatment. Improving beam quality can improve the performance of such devices.

Researchers have described their methods in a paper in the Journal of Applied Physics by the American Association of Physics.

Conventional particle accelerators use electric fields or radio waves to accelerate charged particle beams. The laser wake accelerator operates on a very different principle. The laser in such an accelerator sends pulses through a diffuse plasma. Plasma is a state of matter containing cations and free electrons. The laser pulse excites the electric wave in the plasma. In turn, electric waves create an electric field, also known as the laser tail field, which captures electrons and accelerates them to gigaohm volts. In contrast, as the world's most powerful particle accelerator, lhc accelerates particles to terahertz (1000 times gigaohms).

The technology invented by the Indian and South Korean research teams can increase the amount of electrons captured after laser pulse generation and thus improve the beam quality of the laser wake accelerator.

Dekkinandangupta, a team member and physicist at the University of Delhi, said the findings could improve the technology used in future accelerators.

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